Crankshaft Sprocket, Outer 17 Tooth / Twin Cam & M8

A tighter tolerance crank sprocket, because a loose one moves your cam timing. Feuling machines the inner diameter of this sprocket to a tighter tolerance than the factory part for a better fit on the pinionshaft. That matters more than it sounds. Feuling's testing has shown as much as 4 degrees of cam timing variance with loose fitting factory sprockets, which is timing you did not choose. 17 tooth outer crankshaft sprocket Tighter inner diameter tolerance for a better pinionshaft fit Helps eliminate cam timing variance Made in the U.S.A. Fitment '07-'17 Twin Cam, '06 Dyna and Milwaukee-Eight Also suits early '99-'06 engines converting from spring tensioners to hydraulic cam chain tensioners with the late style roller chain